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Citation: Wan JIANG, Shiman ZHAO, Wenting ZHANG, Duihai TANG. Mo2N nanoparticles encapsulated with N-doped carbon materials: Synthesis by solvent-free method and hydrogen evolution electrocatalytic performance[J]. Chinese Journal of Inorganic Chemistry, ;2026, 42(5): 906-916. doi: 10.11862/CJIC.20250348 shu

Mo2N nanoparticles encapsulated with N-doped carbon materials: Synthesis by solvent-free method and hydrogen evolution electrocatalytic performance

  • Institute of Energy and Environmental Catalysis, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, China

  • Corresponding author: Wenting ZHANG,  Duihai TANG, tangduihai@163.com
  • Received Date: 23 November 2025
    Revised Date: 24 March 2026

Figures(9)

  • Nitrogen-containing organic compounds with varied structures was used as precursors to synthesize N-doped carbon-encapsulated Mo2N nanoparticles via a solvent-free method, systematically evaluating their electrocatalytic performance for hydrogen evolution reaction (HER). The crystalline structure, the elemental composition, the pore structure, and the microstructure of the materials were analyzed using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The results indicated that the choice of nitrogen precursor dictates the crystal structure of the product, thereby exerting a significant influence on HER catalytic performance. Among the samples, MoNC-G, synthesized using guanidine hydrochloride as the precursor, exhibited the best performance: under acidic conditions, it achieved an overpotential of 123 mV and a Tafel slope of 62.8 mV·dec-1 at a current density of 10 mA·cm-2. Under alkaline conditions, a current density of 10 mA·cm-2 corresponded to an overpotential as low as 76 mV and a Tafel slope of 70.5 mV·dec-1. Stability test results revealed no significant current decay after 10 h of chronoamperometry. Additionally, the linear sweep voltammetry (LSV) curves before and after 1 000 cycles basically overlapped, demonstrating exceptional long-term stability and cycling durability.
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